Bug 200552
| Summary: | kernel panic on cat /proc/net/ip_conntrack_expect | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | Mark Tinberg <mtinberg> | ||||
| Component: | kernel | Assignee: | Neil Horman <nhorman> | ||||
| Status: | CLOSED INSUFFICIENT_DATA | QA Contact: | Brian Brock <bbrock> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | medium | ||||||
| Version: | 4.0 | CC: | davem, jbaron, tgraf | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2007-08-08 18:47:19 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Embargoed: | |||||||
| Attachments: |
|
||||||
|
Description
Mark Tinberg
2006-07-28 16:46:22 UTC
Its not solely related to accessing the proc file, as I'm able to read the file here without reproducing the problem. Its most likely, given that this file is protected by two rwlocks, that this is a race generated by trying to read the file while receiving packets with the filter configured. Can you provide your iptables configuration? Also, would you be able to reproduce the problem while running a custom kernel with CONFIG_NETFILTER_DEBUG enabled? Created attachment 133333 [details]
iptables lokkit config
contents of /etc/sysconfig/iptables on affected machine
Unfortunately I cannot reproduce this on the referenced machine as it is a production server. Thank you for the iptables config. If you can in any way manage to reproduce that oops, it would be helpful to me. I'm going to try to reproduce here, but unless I can, there likely won't be much I can do for this bug. Note to self: If upstreams fixes this, these are some candidates http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=e041c683412d5bf44dc2b109053e3b837b71742d http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a41bc00234a0a2ccaa99a194341ae108ae17ddc8 http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4acdbdbe5089c06d5e0c7e96783fcc4414ded00a Mark-
I'm not sure if you are able, but if you have a test machine that you can
reproduce this on, could you please test against the RHEL5 beta release? That
would help me narrow down if the above patches apply to this bug you are seeing,
as I am still unable to reproduce.
|